baber/WOPTO huggingface dataset:
Patent GB-1198637-A (GB)
Title: Continuous Monitoring of Corona on Power Cables.
IPC: G01R31/02
Filed: 1967-09-14
Abstract: 1,198,637. Testing cable insulation. GENERAL CABLE CORP. Sept. 14, 1967 [Sept. 20, 1966], No.41903/67. Heading G1U. An apparatus for testing a cable having a semiconductor insulating shield is of the type where the cable is passed through an elongate liquid bath along which potential gradients are maintained by having earthed electrodes in contact with the liquid at the ends of the bath and a high voltage electrode at the centre. Capacitive pick-ups coupled to the cable enable the occurrence of corona to be detected. To prevent overheating caused by longitudinal current flowing through the semiconductor shield of the cable, the high voltage is repetitively applied to the centre electrode for relatively short time intervals only (about 2 cycles of mains frequency) and relatively long intervals (about 20 cycles) are left between successive applications. A high voltage at mains frequency is applied to the centre electrode 14 of the bath from a supply 25 via a switch 24 and transformer 23. A tapping on the secondary of the transformer is used to apply relatively high voltage to the capacitive pick-offs 12 and 13, to prevent spurious discharges. The two pick-offs are differentially connected to a transformer 37 and are associated with tuned circuits 31, 32 respectively. By adjusting the circuit 31 in the absence of corona, noise signals are balanced out. However a corona signal effects the two pick-ups differently, and a differential signal is derived from the transformer. This is filtered and amplified and passed to a gate 40, which is opened only after the supply has been switched on at 24, so that the system does not respond to the initial switching transients. The switch 24 and gate 40 are controlled by suitably timed and spaced pulses from a trigger circuit 44. When the gate 40 is opened, any detected signals are passed to an oscilloscope 42 and a recorder 43, synchronized with the cable movement. The apparatus of Fig. 1 detects the occurrence of corona above a pre-set value of voltage (set by the positions of pick-offs 12-13). To measure the corona inception and extinction voltages, the pickoffs are replaced by capacitor stacks extending along the bath on each side of the centre electrode, and the simultaneous outputs from the stacks are each processed by circuitry similar to that shown in Fig. 1 and then divided see Fig.2 (not shown). The amplitude ratio of the two outputs corresponds to the position of the void at which corona occurs.
Patent GB-1169480-A (GB)
Title: Method and Apparatus for Conditioning the Corners of Cast Billets.
Inventor: MICHELSON ANATOL
IPC: B22D11/12
Filed: 1968-09-04
Abstract: 1,169,480. Milling elongate workpieces; planing metals. E. W. BLISS CO. 4 Sept., 1968 [6 Nov., 1967], No. 42000/68. Headings B3K and B3L. In a method of and machine for removing adjacent corners from an elongated workpiece, e.g. a cast billet 52 (two such machines A, B being shown in Fig. 1), there is provided a rotary cutting tool assemblage 54 comprising two coaxial cutting members 192, 194 (Fig. 5) having the form of truncated cones and means for biasing the cutters constantly in a direction perpendicular to their axis of rotation, i.e. against the workpiece. The cutters and drive motor 70 are mounted on a first structure pivoted at 82 and biased to bring the cutters into engagement with the billet 52 by means of hydraulic cylinder unit 106. The entire first structure is itself mounted to pivot about a vertical axis through sleeve member 142 so that the cutters automatically follow the workpiece outline. Spring 174 serves to centre the cutters lightly in relation to the general path of the billet. Spray head 170 with nozzles 172 directs coolant on to the cutting members. Fins or burrs produced by the machining operation may be removed by scraper blades 220 . . . 223 pressed against the billet sides by air cylinders 228 . . . 231, Fig. 8. In an alternative embodiment and method (Figs. 9, 10, not shown), the cutters and supporting structure are mounted about a vertical pivot which includes an hydraulic cylinder and ram unit whereby the cutters may be reciprocated in the direction of the length of the billet. In this arrangement the speed of the stroke in one direction is greater than in the other and the pressure with which the cutters are applied to the workpiece is varied according to the direction of stroke so that the cutters first make a relatively deep cut and then when moving in the other direction a light cut which removes the fins or burrs produced by the first cut.
Patent GB-1130766-A (GB)
Title: Improvements in or relating to liquid entrapping wheels and fluid torque transmitters
IPC: F16H47/12
Filed: 1966-09-21
Abstract: 1,130,766. Variable-speed gears. INPOWER WORKS (PTY) Ltd. 21 Sept., 1966 [1 Oct., 1965], No. 42084/66. Heading F2D. In a variable speed planet gear wherein an input carrier 12 carries planet pinions 24 geared to an output pinion 18 and rotation of the planets 24 is opposed by vaned wheels 22 which scoop liquid from an annular layer around the periphery of a drum 14, the vanes 26 and/or side walls 32 of the wheels 22 have holes 30, 34 which prevent carry-over of liquid from one side of the wheel to the other and thus ensure an unbalanced mass of liquid trapped on one side of the wheel. The holes 30 in adjacent vanes may be staggered and the vanes 26 may, as shown, be curved or may, Figs. 5 and 6 (not shown), be straight. A shroud, Figs. 4-6 (not shown), may surround the liquid trapping side of the wheel 22. The planet pinions may, as shown, mesh an output sun 18 or may mesh an output ring gear. The drum 14 may, as shown, be fast with the carrier 12 or may (Fig. 3 not shown) be a separate freely rotatable drum surrounding the carrier. Fig. 7 (not shown) is a torque/speed characteristic.
Patent GB-940703-A (GB)
Title: Improvements in and relating to metal cables
IPC: D07B1/06
Filed: 1960-12-08
Abstract: 940,703. Pneumatic tyres. TREFILERIES LEON BEKAERT. Dec. 8, 1960 [March 4, 1960], No. 42248/60. Heading B7C. [Also in Division D1] A metal cable formed, for example, from one or more strands 2, 3, is, in an unloaded condition, bound by a metal winding 6, characterized by the feature that the winding is applied to the cable under tension between 10% to 20% of the breaking load of the winding material. The cable may be used to reinforce pneumatic tyres.
Patent GB-961912-A (GB)
Title: Flameproofing and flameproofing materials
IPC: C07F9/6581
Filed: 1962-11-09
Abstract: A phenyl-amino-phosphonitrilic polymer of the formula: <FORM:0961912/C1/1> where n is 3-16 is prepared by first reacting phenyl-phosphorus tetrachloride with an excess of ammonium chloride in chlorobenzene under reflux conditions and then ammoniating the resulting phenyl-chloro-phosphonitrilic polymer with an excess of ammonia at room temperature in chloroform.ALSO:A phenyl-amino-phosphonitrilic polymer of the formula: <FORM:0961912/C3/1> where n is 3 or 4 is prepared by first reacting phenyl-phosphorus tetrachloride with an excess of ammonium chloride in chlorobenzene under reflux conditions and then ammoniating the resulting phenyl-chloro-phosphonitrilic polymer with an excess of ammonia at room temperature in chloroform.  A solution of the polymer in chloroform may be used to fireproof material.ALSO:A phenyl-amino-phosphonitrilic polymer of the formula <FORM:0961912/D1-D2/1> where n is 3-16 is used as a fire-proofing agent.  The material treated may be of cotton, hemp, linen, jute, rayon, polyester, polyamide, or wood.  The polymer may be applied as a solution in chloroform.  1-20% of the polymer based on the material may be incorporated.
Patent GB-1117135-A (GB)
Title: A process and apparatus for the monitoring of fire outbreaks in underground mine workings
IPC: E21F17/18
Filed: 1966-09-23
Abstract: Underground fires are monitored by inserting an expendible sniffler tube 3 through a firewall 2 isolating a section where the fire has broken out, drawing gas samples through the tube for analysis at an observation station, and determining the length of tube undamaged by the fire to find the extent of the fire.  The determination of length is preferably effected electrically, the sniffler tube containing at least two mutually insulated electrical conductors extending along its length with ability to make contact locally in the vicinity of the fire by the effect of the heat.
Patent GB-1379332-A (GB)
Title: Hinge fastener for conveyor belts
IPC: F16G3/02
Filed: 1972-05-10
Abstract: 1379332 Riveting UNIROYAL Inc 10 May 1972 [14 May 1971] 42439/73 Divided out of 1379331 Heading B3U [Also in Division F2] A device for securing a belt connector member 10 to a belt 35 comprises a mandrel member 44 having at one end a nail point 90 and at the other end a shank portion 84 which is adapted to receive a bore 64 of a rivet member 46. The mandrel member 44 and rivet member 46 are secured together by a strip of adhesive tape 51 whilst they are being driven through the belt 35. Subsequently; the mandrel member 44 is removed and replaced by a rivet forming member 52 whilst force is applied by suitable hammering of rivet head 48.
Patent GB-958814-A (GB)
Title: Improvements in or relating to hosiery and processes for the formation thereof
IPC: D02G1/02
Filed: 1961-11-28
Abstract: The leg of a stocking has alternate courses knitted of S and Z twist yarns, each yarn being composed of two or more filaments which are subjected to a high twist between 100 to 150 twist per inch, set and then back twisted to a similar degree, the size of the yarn being not greater than 15 denier.
Patent GB-1048946-A (GB)
Title: Means for dimming a vehicle headlamp
Inventor: MCCOMBE JOHN FRANCIS SHIRLEY
IPC: H05B39/04
Filed: 1964-10-21
Abstract: 1,048,946. Systems for dimming vehicle headlamps. JOSEPH LUCAS (INDUSTRIES) Ltd. Sept. 29, 1965 [Oct. 21, 1964], No. 42872/64. Heading H2H. A system for dimming the headlamps 16 of a motor vehicle comprises a transistor 15 having its collector emitter path in series with the lamps, means being provided to vary the base current of the transistor to control the lamp current. The base current control means comprises a second transistor 14 having its collector connected to the base of the transistor 15, the transistor 14 being controlled by means of a potentiometer 13 connected across the battery 11, 12. A photo-cell 17 is included to make the system responsive to incident light. If required an amplifier may be included between the photo-cell 17 and the transistor 15.
Patent GB-1416312-A (GB)
Title: Electrostatic spray gun
IPC: B05B5/053
Filed: 1972-09-15
Abstract: 1416312 Electrostatic spray guns GRACO INC 15 Sept 1972 [27 Dec 1971] 42914/72 Heading B2F In an electrostatic spray gun the conductive path to the charging element 22 is always insulated from the spray material passage 18. The outlet end of the passage 18 is controlled by a valve 6, Fig. 2, comprising a seat 13, Fig. 3, and an element 12 which is retractable upon actuation of a trigger 5 pivoted at 8. A nut 15 when screwed home engages a part 10 to prevent opening of the valve 6. The conductive path through an insulating housing 17 comprises a cable 23, spring 26, conductive element 27, spring 28, resistor 29, stud 30, screw 34, wire 33, spring biased conductive plug 35 and finally a ring 36 which is secured to a rotatable nozzle by an insulating pin 37a and a conductive pin 37 which terminates in the charging element 22. The ring 36 can be removed and repositioned in a different orientation, further holes in the nozzle being provided to accommodate the pins 37, 37a.
Patent GB-1411822-A (GB)
Title: High-energy-content secondary explosive
IPC: C06B33/08
Filed: 1973-09-13
Abstract: 1411822 Explosive compositions DIEHL 13 Sept 1973 [2 Oct 1972] 43008/73 Heading C1D A high energy secondary explosive composition for use in explosive incendiary projectiles comprises a mixture of approximately equal parts by weight of a high energy explosive and a metal powder, at least 20% by weight of the metal powder being a heavy metal and the remainder aluminium. The preferred heavy metal is tungsten, but this metal may be wholly or partly replaced by tantalum, vanadium, niobium, or uranium, or an alloy thereof. In examples tungsten powder is mixed with aluminium powder, hexogen (RDX), and wax.
Patent GB-1108300-A (GB)
Title: Apparatus for detecting low-resistivity fluids, such as water and the like, in high-resistivity fluids, such as petroleum products and the like
IPC: G01N27/06
Filed: 1965-10-11
Abstract: 1,108,300. Electrophysical measurement. SCULLY SIGNAL CO. Oct. 11, 1965 [July 2, 1965], No. 43082 /65. Heading G1N. Portable apparatus for detecting the presence of water in oil storage tanks comprises a probe with electrodes 3, 5 which is lowered into the tank and on passing from oil to water completes the base/collector circuit of transistor T1 causing it to conduct, this in turn causes transistor T2 to conduct energize a lamp L and buzzer I. A low-value resistor R4 may be connected across the probe by a switch S2 to check the operation of the indicators. The inner electrode 3 of the probe is bent into a hook shape to prevent the surfacetension of the oil from maintaining an oil bubble in the gap 7. In a modification, Fig. 2 (not shown) the inner electrode is terminated in a shallow dish.
Patent GB-1200979-A (GB)
Title: Process for catalytically hydrogenating dicarboxylic anhydrides
IPC: B01J23/85
Filed: 1968-09-11
Abstract: 1,200,979. Hydrogenation catalysts. MITSUBISHI PETROCHEMICAL CO. Ltd. 11 Sept., 1968 [13 Sept., 1967], No. 43241/68. Heading B1E. [Also in Division C2] A hydrogenation catalyst comprises a solid solution of (A) nickel and (B) molybdenun and/ or tungsten, which solid solution may be supported on or by porous carrier material, for example kieselguhr, silica gel, silica-alumina or alumina. When the catalyst comprises nickel and molybdenum, the atomic ratio of molybdenum to nickel is preferably between 0.01 to 1 and 0.30 to 1, more preferably between 0.06 to 1 and 0.20 to 1; when the catalyst comprises nickel and tungsten, the atomic ratio of tungsten to nickel is preferably between 0.01 to 1 and 0.08 to 1, more preferably about 0.03 to 1. In order to maintain a desired shape thereof, the catalyst additionally may comprise binder material. The Specification gives detailed methods for preparing the catalyst which may be stabilized against spontaneous combustion by treatment with carbon dioxide or with air diluted by an inert gas. The catalyst is used in the production of a cyclic lactone and/or a cylic ether by the catalytic hydrogenation with hydrogen of a dicarboxylic anhydride; as exemplified, succinic anhydride or maleic anhydride is hydrogenated to produce, as the main products, gammabutyrolactone and/or tetrahydrofuan.
Patent GB-940641-A (GB)
Title: Improvements in or relating to printing cylinders for high-speed printing systems
IPC: B41J1/32
Filed: 1961-12-05
Abstract: 940,641. High-speed printers. COMPAGNIE DES MACHINES BULL. Dec. 5, 1961 [Dec. 6, 1960], No. 43429/61. Heading B6F. Type wheel machines ; type printing surfaces.- A high-speed pointer comprises a continuously rotatable printing cylinder, having a number of alpha-numerical printing elements, such as 11, 31, in Fig. 2, arranged in paired and alternately staggered columns 1, 2, and 3, 4, respectively, with the printing elements 11, 12-15, 16 and 23, 24-27, 28, so disposed as to form two adjacent rows, such as 01, 02, so that only the pairs of identical printing elements of alternate pairs of columns are aligned below the printing hammers (Fig. 1, not shown) at the striking instant, common to a row, to thereby prevent accidental and partial imprint of the intermediate identical printing element, when the alternate identical printing elements are selected for printing. In one embodiment in Fig. 4 the printing elements are distributed in four arcuate zones, two of these zones N1, N2 carrying printing elements used in accounting operations only, are separated from one another by a zone 41, carrying alphanumerical elements and a zone A2, containing elements corresponding to special signs and used rarely in various operations. Using the elements of the identical zones N1, N2 only, the printing cylinder can print two lines per revolution of the cylinder. In another embodiment (in Fig. 3, not shown) the cylinder is divided into two zones only, corresponding to zones A1 and A2. To increase the time interval available at the end of each printing cycle, which is used for line spacing, the printing elements are arranged in a decreasing order of the frequency with which they are employed, the elements employed with the same frequency occupying a common arcuate portion of the periphery of the cylinder and the line-by-line printing commences by striking of the elements most frequency employed, finishing with striking of the elements least frequently used.
Patent GB-1341973-A (GB)
Title: Multifilament yarn texturizing apparatus and process
IPC: D02G1/16
Filed: 1971-09-21
Abstract: 1341973 Yarn texturising J P STEVENS & CO Inc 21 Sept 1971 [30 Sept 1970] 43979/71 Headings DID and D1F Multifilament yarn is texturised by overfeeding a yarn into a swirling fluid zone to form at least one crank-shaped spinning loop in the yarn, permitting the yarn to untwist during withdrawal from the zone, and abruptly changing the direction of yarn movement during the untwisting. Air is fed tangentially, Fig. 1, into chamber 1 through conduit 4 to form spinning loop 10 in yarn 3 overfed through conduit 2 inclined to the chambers axis. The yarn is withdrawn through conduit 5 which has bores 6 to by-pass air and thus eliminate air swirl in the conduit. The driection of yarn movement is abruptly changed after the yarn has passed through elbow 7 to form loops which give a textured effect to yarn 8. Alternatively, Fig.5 a suitable texturising device is formed by inserting a component into a bored-out texturising chamber 18 of a conventional concurrent texturising device. The component forms a texturising chamber 13 plugged by plug 32, receiving air via tangential duct 15, outer chamber 35 and conduit 19, and receiving yarn via conduit 34 inserted in an inclined component bore. The component has by-pass bores 17 surrounding a yarn outlet conduit. The size of chamber 36, and thus the flow through bores 17, is adjusted by rotation of threaded cap 29.
Patent GB-1013880-A (GB)
Title: Composition and process for separation of trialkyl-aluminum compounds
IPC: C07F5/00
Filed: 1963-11-07
Abstract: To either (A) a displacement product containing low molecular weight trialkyl aluminium and a -olefin or (B) a mixture of non-olefin hydrocarbon and a low molecular weight trialkyl aluminium or (C) a mixture of a dialkyl aluminium alkoxide and a low molecular weight trialkyl aluminium or (D) mixtures of any of these is added a complexing agent for the low molecular weight trialkylaluminium comprising either a compound RnMX or a complex of RnMX and low molecular weight trialkyl aluminium in a 1 : 1 ratio, in an amount sufficient to form a complex having a 2 : 1 ratio of trialkyl aluminium to RnMX with substantially all of the trialkyl aluminium, and separating the 2 : 1 complex.  R is an alkyl radical, M is nitrogen, arsenic, phosphorus, sulphur, selenium or tellurium, X is halogen and n is 3 or 4.  The complexing agent is preferably a tetra-alkyl ammonium halide or a 1 : 1 complex thereof with low molecular weight tri-alkyl aluminium, and complexes a (R13Al)R4NCl, wherein R1 i an alkyl radical containing 2-5 carbon atoms, R contains 1-5 carbon atoms, and a is 1 or 2 are claimed per se.  The complexing reaction takes place at 50-150 DEG  C., suitably at atmospheric pressure during a time of 0.25-30 minutes.  In the formation of the 1 : 1 complex, equimolar amounts of the reactants or a slight excess of trialkyl aluminium are employed.  In the reaction between the 1 : 1 complex and trialkyl aluminium, preferably an excess, e.g. 1.05 to 1.2 moles of 1 : 1 complex per mole of trialkyl aluminium is employed.  The displacement product may be that obtained by treating a high molecular weight trialkyl aluminium in which the alkyl radicals have an average of 4 to 30 carbon atoms with an a -olefin containing 2 to 5 carbon atoms and this may be treated with a 1 : 1 complex of a tetra-alkyl ammonium halide in which the alkyl radicals have an average of 1 to 5 carbon atoms and a trialkyl aluminium in which the alkyl radicals have an average of 2 to 5 carbon atoms.  A lower layer of 2 : 1 complex so produced is separated and washed with a paraffinic hydrocarbon containing 5-12 carbon atoms.  The 2 : 1 complex may be decomposed at least partly to 1 : 1 complex and trialkyl aluminium by heating at subatmospheric pressure, but decomposition is preferably achieved by contacting the complex with a non-reactive extraction solvent, e.g. a hydrocarbon having 4 to 20 carbon atoms, at 100-200 DEG  C. under atmospheric pressure.  The hydrocarbon is conveniently the same as that used in the growth reaction, e.g. kerosene.  In a continuous reaction the complex and 1 to 40 volumes of solvent are contacted in countercurrent in an extraction zone during a residence time of 1 to 60 minutes and extraction solvent enriched in trialkyl aluminium and complex material enriched in 1 : 1 complex are withdrawn from the zone. Part of the latter may be returned to the extraction zone.  The remainder is recycled to the complexing stage.
Patent GB-1508877-A (GB)
Title: Stencil duplicators
IPC: B41L13/04
Filed: 1975-10-27
Abstract: 1508877 Stencil printers GESTETNER Ltd 21 Oct 1976 [27 Oct 1975] 44139/75 Heading B6C A rotary stencil duplicator comprises at least one cylinder and a parallel stencil-mounting core 16 for winding and storing used stencils wherein the drive to the core 16 includes a one-way clutch 14 and a torque-limiting slip facility the core being driven faster than the cylinder(s) which, in operation, supports the stencil. The core 16 may be released from spring guide 19 and swung out of position to remove stencils therefrom which stencils may be mounted on an intermediate support to provide a surface to slip against the core 16. A drive belt 8 may also slip. Stencils may applied from the core 16 into the duplicator at which time the core is freely rotatable. A slot 27 in core 16 receives the leading edge of a stencil. Reference has been directed by the Comptroller to Specification 1,421,909.